Finding the Fourth Proportional to 128,752,168.40, 193,128,252.60 and 60,727,720.40
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Solution
The fourth proportional to 128,752,168.40, 193,128,252.60 and 60,727,720.40 is: 91,091,580.60
Step by Step Solution
- Step 1: Write the proportion equation
128,752,168.40 : 193,128,252.60 = 60,727,720.40 : x - Step 2: Convert to fraction form
128,752,168.40/193,128,252.60 = 60,727,720.40/x - Step 3: Cross multiply
128,752,168.40x = 193,128,252.60 × 60,727,720.40 - Step 4: Simplify right side
128,752,168.40x = 11,728,238,525,233,372 - Step 5: Solve for x
x = 11,728,238,525,233,372/128,752,168.40 - Step 6: Final answer
x = 91,091,580.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.